Reinforcement for composition covering of structural metal shapes.



D. H. HAYDEN. REINFORCEMENT FOR COMPOSITION COVERING OF STRUCTURAL METALSHAPES.

APPLICATION FILED AUG. 31, 1911.

1,121,558,, 7 Patented Dec. 15,1914.

514 001 Pt z 16 a ,Dezm aczo marl a den To all whom it may concern i thereinforcement imrrun STATES PATENT oniucu. I

DAVID HOMER HAYDEN, OF NEW YORK, N. Y.

REINFORCEMENT FOB COMPOSITION COVERING OF STRUCTURAL METAL SHAPES.

Be it known that I, DAVID HormaHAr- DEN, a citizen of the United States,and a resident of New York, county and State of New York, have inventedcertain new and useful Improvements in Reinforcements for CompositionCovering of Structural Metal Shapes, of which the following 1s a full,clear, and exact description.

Thev improvement relates toremforcements for the concrete covering ofstructural metal shapes.

The invention seeks to provide a simple, inexpensive reinforcementreadily and easily applied to structural members and secured thereto indefinite or predetermined offset relation, whereby the concrete coveringis effectively reinforced and secured to the structural member.

The invention consists in the features of improvement hereinafter setforth, illustrated in the' preferred form in the accompanying drawingsand more particularly pointed out in the appended claims.

In the drawings, Figs. 1, 2 and 3 are plan views illustrating differentways of manufacturing the improved reinforcement. Fig. 4 is a sectionalview of the I-beam with applied thereto. Fig. 5 IS an inverted plan viewof the parts shown in Fig. 4. In Figs. 4 and 5 a portion of thereinforcement is expanded and a portion is unexpanded to illustrate themanner in is a perspective view,

which it is applied to the beam. 6 is a perspective view of the I-beamwith the reinforcement and the concrete covering applied thereto. Fig. 7is a perspective View illustrating a modified form of the remforcementand its application to a column. Figs. 8 and 9 are a horizontal sectionand an elevation, illustrating the application of the reinforcement toan angle-bar. Fig. 10

illustrating the apof the reinforcement to a channelplication 11 is asection illustrating a mod bar. Fig. fied form. V

The improved reinforcement comprises an expansible metal strip which 15formed of a series of cross-stays 11 each OfWhlCh is connected to theadjacent cross-stays of the series and which areadapted to extend backand forth over the face of the structural shape or member to which thereinforcement is applied. The strip is provided with a series of offsetattaching and spacing elements which secure the same to the struc-Specification of Letters ratent.

and like composition which can be Patented Dec. 15, 1914.

Application filed August 31, 1911. Serial No. 647,103.

- tural member in proper offset relation. As

shown, the attaching hooks 12 and spacers 13 are integral with andextend from the points of connection between the adjacent cross-stays11. Before the expansible reinforcement is applied to a structuralmember, the series of cross-stays 11 are substantially parallel to oneanother, as shown at the lower portion of Fig. 5, and the space betweenthe hooks 12 at opposite sides of the reinforcements is somewhat largerthan the flange or portion of the structural shape to which it isapplied. When the strip is expanded longitudinal of the structuralmember it is contracted laterally and the hooks are drawn together andengage the flange or flanges of the structural member while thecross-stays are separated and then extend-back and forth in zig-zagfashion between the hooks 12 and over the face of the structural member.

Figs. 4, 5 and 6 illustrate the application of the improved reinforcingstrip to an I-beam 14. In Figs. 4 and 5'the reinforcing strip is shownpartially in its expanded and partially in its unexpanded condition. Asthere shown, the hooks 12 are adapted to overlap the lower flange of theI-beam 14, while the upwardly and inwardly extending spacers 13 engagethe lower face of the flange of the I-beam. The hooks 12, in theunexpanded condition of the reinforcement, can be readily slipped overthe flange and as the latter is expanded, drawn tightly and securelyinto engagement therewith. It is obvious that the engagement of thehooks 12 with the flange limit the expansioirof the reinforcing strip,and the engagement of the spacers 13 with the lower side of the I-beampositively position the cross-stays 11 in definite or predeterminedoffset relation with reference to the face of the beam to therebysecurely .lock the concrete covering 15 thereto.

The improved reinforcement may be formed, as shown in Fig. 1, of aseries of wires which are bent to cross each other at the points a andare twisted, soldered or otherwisesuitably secured together at suchpoints.- The portions of the wires between the joints a form thecross-stays 11 and the ends of the wires beyond the joints are bent toproper shape to form the offset hooks 12 and the spacers 13. Thereinforcing strip is also readily made from a piece of sheet metal, asshown in F g. 2, by cutting alternate long and short slots 6 and 0 inthe opposite edges thereof, to thereby form the connected cross-stays 11and end extensions which are bent to form the attaching hooks 12 andthespacers 13. Or, as indicated in Fig. 3, the formed from a piece ofexpansible metal having slits b and c therein. By varying the dimensionX, indicated in Figs. 1, 2 and 3, the number of cross-stays 11 perlineal foot may be controlled, as desired, and by varying the dimensionsY, the lengths of the extensions can be controlled and the im rovedreinforcement adapted to fit differgnt sizes and shapes of thestructural memers.

Fig. 7 illustrates the application of the improved reinforcement to acolumn formed of two channel-bars l6 and connecting side plates 17. Inthis form the cross-stays 11 are centrally connected at points a as wellas being connected at their ends so that the concrete covering will besecurely held in place, even though the surface of the column eofconsiderable width.

Figs. 8, and'9-illustrate the application of the improved reinforcementto. an-angle-bar 18. In this form, the cross-stays 11. are bentintermediate around the corner of theangle bar and certain of theextensions 13,'which constitute spacers in the form shown in Figs. 4and5,

are projected beyond the flanges of the angle-bar to reinforce the bodyof concrete 19 in which the angle-baris embedded.

Fig. 10 illustrates the application of the improved reinforcement to atchannel-bar 20. In this form the attaching hooks and spacers at one sideof the strip are sinnlar to those shown in F igs. 4 and 5 and are ar-.,

ranged to engage the opposite faces of the lower flange of thechannel-bar. The jolnts between the cross-stays 11 at the other side ofthe reinforcement are each provided with a single extension which isbent upwardly over the face of the channel-bar and around the upperflange,being provided with an 1n: wardly oflset portion 13 to form aspacer and being also provided with a hook 12' which is adapted toengage the upper flange of thechannel bar. In the form shown in Fig. 11,the hooks 12" are provided with-upturned end portions 21 and the spacers13 extend outwardly. beyond the flange of the.

I-beam .14 to more effectively reinforce the concrete covering 15.

In the present improved reinforcement the connections or joints betweenthe expansible portions or cross-stays are removed from the outer endsof the attachmgelements so that the force employed expanding thereinforcementis transmitted from one part to another wlthout expandingor materially destroying the flange-engaging portions of'the attachingelements. Because reinforcement could be their ends to extnd;

of this, the engagement of the attaching elements with the flanges ofthe structural member will limit or arrest the expansion of thereinforcement with the reinforcing elements thereof uniformly spaced.Thus by properly proportioning the parts, the desired amount ofreinforcement per lineal foot can be accurately predetermined. Moreover,the spacing elements or parts of the reinforcement which engage theouter face;

proper, uniform spaced relation to one an-' other and to the face of themember, and prevent them from being pushed along the beam, tilted upagainst it orothei'wise displaced.

It is obvious thatnumerous changes may. be made in the details set forthwithout cleparture from the essentials of the invention as defined inthe claims.

Having thus described my invention what I claim as new and desiretosecure by Letters Patent, is

1. An expansible metal reinforcement for is applied to compositioncovering of structural members,

comprising connected -or joined portions capable of expansionlongitudinally of the member and of contraction laterally thereof,

and offset extensions constituting attachmg elements arranged to hookover the flanges of the member upon the expansion of the reinforcementto secure the latter. thereto, the connections or joints betweensaidexpansible portions being removed from the outer ends of saidextensions, the force employed in expanding'the reinwhereby forcement istransmitted from one portion to another without expanding or materiallydistorting the flange engaging portions of said attaching elements.

2. An expansible metal reinforcement for composition covering ofstructural members, comprisin connected or joined portions capable ofexpansionlongitudinally of the member and ofcontraction laterallvthereof,

and offset extensions constituting attachingelements arranged .tohookover the flanges inforcementto securethe latter thereto, thev ingparts arranged to engage the outei' face of the member upon theexpansion of they reconnections or joints between said expansibleportions being removed from the outer ends of said extensions, said'reinforcement hav- 7 .attaching elements extending from the conne'ctionsor joints between said cross stays and arranged to hook over theflanges. of the member to secure the reinforcement thereto, saidreinforcement having parts arranged to engage the outer face of themember to hold the reinforcing portions thereof in predetermined oflsetrelation.

4:. An expansible metal reinforcement for composition covering ofstructural members comprising a series of cross stays connected orjoined against separation at intervals to form a zigzag arrangement ofthe cross stays when expanded, and extensions from said cross staysconstituting attaching elements, the joints or connections between saidcross stays being removed from the outer ends of said extensions wherebythe force employed in expanding the reinforcement is transmitted fromone cross stay to another without expanding or materially distortingsaid attaching elements. 7

5. An expansible metal reinforcement for composition covering ofstructural members comprising a series 'of cross stays connected orjoined against separation at intervals to define an angular zigzagarrangement of the cross stays when expanded and integral extensionsfrom said cross stays constituting attaching and spacing elements.

6. A metal reinforcement for composition covering of structural. memberscomprising cross stays each connected or joined to adjacent stays toform .an expansible,

series, said cross stays having offset extensions bent at their ends toconstitute attaching hooks, the joints or connections of said cross,stays being removed from the hooked ends of said extensions, and saidreinforcement having portions offset from the plane of said cross staysand constitute spacing stays having integral portions extending from theconnections 'or joints thereof'and constituting attaching elementsarranged tov overlap the flanges of the .membento secure thereinforcement thereto and said cross stays having integral portionsoffset from the plane thereof and constituting spacing elements arrangedto engage the outer face of the member to hold the reinforcement inpredetermined offset relation;

8. A metal reinforcement for composition covering of structural memberscomprising a series ofvcross stays formed of separate wires and eachconnected or joined to the adjacent stay wire of. the series to form anangular zigzag arrangement of the cross stays over the face of themember, said stay wires having integral portions extending beyond theconnections thereof and forming attaching hooks for engaging the flangesof the member to secure the reinforcement thereto, and stay Wires havingintegral portions forming spacing elements arranged to engage the outerface of the member to hold the reinforcement in predetermined offsetrelation.

9. A metal reinforcement for the composition covering of structuralmembers comprising an expansible series of connected cross-stays havingattaching and spacing elements, said attaching and spacing elementsbeing oflset :from the plane of the cross-stays and arranged to hookover the flanges and engage the outer faces respectively of thestructural member upon the expansion of the reinforcementv to secure thelatter to the structural member with the cross-stays in predeterminedoffset relation thereto. 1

10. A metal reinforcement for the composition covering of structuralmembers comagainst the edges of the flanges of the members and saidreinforcement having other parts projecting outwardly beyond the flangeengaging parts of said attaching hooks.

11. A metal reinforcement for the composition covering of structuralmembers embodying an expansible series of cross stays, each connected tothe adjacent cross stays of the series, said cross stays having integralportions extending beyond the points of connection thereof and bent tofornr attaching elements adapted'to engage the structural member uponthe expansion of the reinforcement to secure the latter thereto,substantially as described.

I 12. Ametal reinforcement for the composition covering of structuralmembers embodying an expansible series of connecting cross stays, saidcross stays having integral portions extending beyond the points "ofconnection thereof and bent to form attaching and spacing elementsadapted to engage the structural member upon the expansion of thereinforcement to secure the latter thereto in predetermined, offsetrelation, substantially as described. a

13. A metal reinforcement for the composition covering of structuralmembersembodying a series of cross stays each connect-

